you could try setting supress_cng on the leg facing the aastra, that will take the cng negotiation out of the sdp and possibly disable the locally generated silence. On Thu, May 17, 2012 at 12:45 PM, Phil Quesinberry <philq@qsystemsengineering.com> wrote:
Actually it’s one of the latest 1.2.0 revisions – b653c21.
I didn’t realize that with the quick look I had at the code. Curious… that makes me wonder if the Aastra phones are generating the noise when they don’t see any media. A user complained about hearing the noise when first logging into voicemail, before she is asked for her PIN. I hadn’t noticed it before because I normally do that on speaker but on the handset, it is quite noticeable.
Is there a way to use send_silence_when_idle without having it kill ringback when set to a non-zero value?
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Anthony Minessale Thu May 17 20:21:35 MSD 2012
Which revision of the code are you looking at?
The sleep sends dummy frames unless you set that
send_silence_when_idle var, if its not set its probably not sending
anything.
You can see in the code that unless that var is set it wont be
generating anything.
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